When and where to renew
CDLs renew through the Texas Department of Public Safety, and CDL renewals are generally handled in person at a driver license office rather than online, because of the medical and testing requirements attached to the license. DPS mails a renewal notice, but treat the expiration date printed on your license as the real deadline and start early: San Antonio area offices get busy, and appointment slots near the end of the month go fast.
Bring your current license, your current medical certificate, and payment for the renewal fee. You will also take a vision screening at the office. If anything about your license has changed, such as your address or your name, handle the documentation for that at the same visit rather than hoping it slides.
Your medical certificate must be current and on file
This is the step that burns more drivers than any other. Federal rules require your medical certificate to be on file with the state, tied to your CDL record. Every time you get a new DOT physical, the new certificate has to reach DPS; examiners submit results electronically, but records get mismatched, and the driver is the one who pays for the error.
If your medical certificate on file expires, DPS can downgrade your CDL to a regular license until a current one is recorded, and driving commercially on a downgraded license is a serious problem. The habit that protects you: after every physical, confirm the new expiration date is reflected on your driving record before your old card runs out. Do not just assume the upload worked.
Self-certification: the checkbox that matters
When you first get a CDL, you declare a self-certification category describing the kind of driving you do: most San Antonio drivers who cross state lines or haul interstate freight are non-excepted interstate, which is the category that requires a current medical certificate on file. Your category on record must still match the work you actually do at renewal.
If your driving has changed, say you moved from interstate freight to a job that falls under one of the excepted categories, renewal is the time to update the declaration rather than letting the record drift. A mismatch between your category, your medical certificate, and your actual work is the kind of paperwork problem that surfaces at the worst possible moment, like a roadside inspection or a new employer's background check.
HazMat holders: retest and TSA renewal
Renewing with a HazMat endorsement adds two jobs. Texas requires HazMat holders to pass the HazMat knowledge test again at renewal, so budget study time for the handbook section rather than assuming you will remember placard tables from years ago.
Separately, your TSA security threat assessment expires every five years, on its own clock, not your license's. DPS cannot issue or renew the endorsement without a current threat assessment, so check both dates. Starting the TSA renewal early matters, because fingerprinting appointments and processing take time you do not have in the last week before your license expires.
What happens if your CDL expires
Driving commercially on an expired CDL is illegal, full stop, and employers' insurance treats it about as warmly as you would expect. Texas does allow renewal after the expiration date, but the longer it sits expired, the worse it gets: if a license has been expired for more than two years, expect to start over as a new applicant, including knowledge and skills testing.
There is also a middle trap: an expired or downgraded CDL can freeze your employment before it legally ends it, because most carriers pull records regularly and cannot dispatch a driver whose credentials are not clean. Renewal is cheap insurance compared to a month of lost work.
Renewal checklist
Work through this list before your expiration date and renewal becomes a boring errand, which is exactly what you want it to be:
- Note your license expiration date and book your DPS visit early
- Get a DOT physical while your current card is still valid, and confirm DPS has the new certificate on file
- Verify your self-certification category still matches the driving you do
- If you hold HazMat, confirm your TSA threat assessment is current and study for the knowledge retest
- Bring your license, medical certificate, and fee payment to the office, and expect a vision screening
See San Antonio clinics for DOT physicals, with phone numbers, so your medical certificate is current and on file well before your DPS visit.
Browse DOT physicals